github.com/cs3org/reva/v2@v2.27.7/pkg/storage/utils/indexer/map.go (about)

     1  // Copyright 2018-2022 CERN
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // In applying this license, CERN does not waive the privileges and immunities
    16  // granted to it by virtue of its status as an Intergovernmental Organization
    17  // or submit itself to any jurisdiction.
    18  
    19  package indexer
    20  
    21  import (
    22  	"github.com/cs3org/reva/v2/pkg/storage/utils/indexer/index"
    23  	"github.com/iancoleman/strcase"
    24  )
    25  
    26  // typeMap stores the indexer layout at runtime.
    27  
    28  type typeMap map[tName]typeMapping
    29  type tName = string
    30  type fieldName = string
    31  
    32  type typeMapping struct {
    33  	PKFieldName    string
    34  	IndicesByField map[fieldName][]index.Index
    35  }
    36  
    37  func (m typeMap) addIndex(typeName string, pkName string, idx index.Index) {
    38  	if val, ok := m[typeName]; ok {
    39  		val.IndicesByField[strcase.ToCamel(idx.IndexBy().String())] = append(val.IndicesByField[strcase.ToCamel(idx.IndexBy().String())], idx)
    40  		return
    41  	}
    42  	m[typeName] = typeMapping{
    43  		PKFieldName: pkName,
    44  		IndicesByField: map[string][]index.Index{
    45  			strcase.ToCamel(idx.IndexBy().String()): {idx},
    46  		},
    47  	}
    48  }